Fossil ecosystems of North America
Nudds John R., Selden PaulKniha
Citace v seznamu literatury:
NUDDS, John R. a SELDEN, Paul. Fossil ecosystems of North America: a guide to the sites and their extraordinary biotas. London: Manson, 2008. ISBN 9781840765076. Dostupné také z: https://proxy.k.utb.cz/login?url=http://marc.crcnetbase.com/isbn/9781840765076.